Typewriting machine



March 12, 1929. c. B. CORCORAN ET AL 1,704,699

7 TYPEWRITING MACHINE Original Filed Dec. 30. 1922 4 Sheets-Sheet 2 l IQ W Mai-ch 12, 1929. c. a. CORCORAN ET m.

TYPEWR I T I NG MACHI NE Original Filed Dec. 30. 1922 4 Sheets-SheetMarch 12, 1929. c. B. CORCORAN in -'l,704,699

TYPEWRITING MACHINE Original Filed Dec. 30. 1922 4 Sheets-Sheet 4Patented Mar. 12, 1929.

UNITED STATES PATENT OFFICE.

CORNELIUS B. COBCORAN, DECEASED, LATE OF NEW YORK, N. Y., BY MICHAEL J.COR- CORAN, ADMINISTRATOR, OF BROOKLYN, NEW YORK, AND ALFRED G. F.KUBOW- SKI, OF BROOKLYN, NEW YORK, ASSIGNORS TO UNDERWOOD ELLIOTT FISHERCOM- PANY, OF NEW YORK, N. Y., A CORPORATION (313 DELAW'ARE.

TYIPEWRITING MACHINE.

Original application filed December 30, 1922., Serial No. 609,793.Divided and this application filed February 11, 1926. Serial No. 87,530.

This invention relates to sound-deadening casing for typewritingmachines. More particularly, to certain features thereof, the inventionrelates to a combined carrying and sound-deadening casing, that is tosay, to a casing in which a portable machine may be carried by hand fromplace to place and in which the machine may be operated.

In a. casing of this kind, the side, rear and bottom walls of thecarrying case may withouttransformation serve as the side, rear andbottom walls of an interior sound-deadening casing. A cover is providedfor the interior sound-deadening casing which may be swung upwardly topermit access to the machine.

To enable the operator to insert readily or remove the machine from thecasing, the front wall of the interior casing is made of two pieces, towit, a lower and an upper plate. The lower plate is attached to thecarrying case and its central portion is cut away to allow the keyboardof the typewriting machine to protrude therethrough. The upper platewhich may be attached to, or detached from, the lower plate is soconstructed that when held.in position on the lower plate it will closethe opening above the ke board, and assist in holding the machine in pace.

A feature of the present invention is the provision of means forattaching the upper plate to the lower plate, said means consisting oflatches, one on each side of the plate, each latch having its hookportion pivotally mounted on the lower plate, and a pin on the upperplate which is engaged by the hook portion when the upper plate is movedinto position on the lower plate, thereby holding the former inposition. For limiting the throw of the hook to operative or inoperativepositions, the lower part of the hook is provided with a yoke whichengages a pin on the lower plate, thereby limiting the throw of the hookin either direction.

Another feature of the invention relates to novel means near the rear ofthe cover and upon which the latter is swingably mounted. Said means arein the form of hinges, of which one at each side, between the cover andthe side wall of the casing, is provided.

Still another feature of the invention relates to novel means forholding the cover in its closed position. Said means may comprise astirrup on the cover and a hook pivoted on the front wall of the casing,the hook being attached to engage the stirrup when the cover is closedand hold the same in its closed position, means being provided forreleasing said hook from the stirrup. Since it is desired to place thehook and the stirrup in the inside of the casing, means is provided atthe exterior of the casing which is operatively con nected to the hook.thereby enabling the operator to release the hook from the exterior ofthe casing.

Still another feature of the invention relates to novel means forclosing the slot in the top of the cover through which various leversand arms on the carriage project. Said means comprises cushions, one oneach side of the opening, and springs on the under side of said cushionsfor urging them together. A

This application is a division of a plication, Serial No. 609,793, filedDecember 30, 1922 (now Patent No. 1,578,399, dated March 30, 1926).

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a top plan view of the casing; the left-hand side beingshown with the cover removed, and the position of the machine beingindicated in dotted lines.

Figure 2 is a view, cross-sectional side elevation, taken on the line2-2 of Figure 1.

Figure 3 is a front view of the casing and the machine therein; theoutside casing-cover having been removed from the casing-body and thelatter being seated in the removed cover.

Figure 4- is a view, in cross-section, on the line l l of Figure 3: theinterior soundproof cover being, however, shown as swung up to positionfor access to the machine.

Figure 5 is a front view of the casing with the outer cover lockedthereon for transportation; the casing being broken away at theright-hand end to show certain details within the same.

Figure 6 a view, looking at the interior of the cover, of the cushionswhich form the slot for the operating levers on the carriage, and of themeans whereby the same are secured to the casing-cover.

Figure 7 is a detail view, in cross-sectional side elevation, showingthe means whereby the rear of the window-pane is held to the cover, andshowing the cushion which forms the front wall of the slot for thelevers on the carriage and the attachments of the same to the cover.

Figure 8 is a rear view of the device for locking down the interiorwound-proof cover.

The casing comprises a body-portion 15 and an outside cover-portion 113.The parts 15 and 16 hare hinge-pl: s 17 and 18, respectively, securedthereto; and the plates 17 have fixed thereto hingepins 19 for receivingthe plates 18. In the lower edges of the front wall of the cover-pa rt16 (see Figure 2% are pins 20, adapted, when the cover 15 111 c osedposition on the body-portion 15, to be received in pockets or reresscs21 in the orward edge of the part A lock of any suitable character,operable by a key ada ted to be set into the kr-y-hote in the front allof the cover 16, serves to secure the cover 16 to the body-part 15. Theassembled cr with the machine therein may be carried by means of ahandle on the cover 113. \Vhen so carried by the handle Eat, the pins 20serve to support the body-part 15, and machine, from the cover. \Vhenthe lee; 92 is released and the cover 16 swung around the hinges 19sufliciently to clear the pins 20 of the recesses 21, the cover-part maybe shifted longitudinally leftward to clear the hinge-plates 18 thereonfrom the hinge-pins 1; whereupon the cover-part 16 may be lifted fromthe body-part 15, and, if desired placed in the position shown in Figureat. wnerein the bodypart 15, with the machine thereon, is shown asseated in the inverted cover. Preferably the cover has side flanges 2:)(see Figure 3), which are adapted to fit over the side walls 26 of thebody-pa 't in both the Figure 2 and Figure 1 positions.

The body-portion 15 of he casing is divided longitudinally by 0. plate27, which extends from one to the other of tin; side walls 26 thereof.The plate is oti'set at its lower edge to form a flange through whichare passed wood screws 29. recur-inn he plate to the base 30 of thebody-part of the casing. The plate 27 may be further braced by means ofa strip 31 extending: lony'itiulinally thereof on the base A similarstrip :19 may be extended from side to side of the body-part. at theforward edge thereof. where the cover engages the base. The plate 37,together with the rear wall of the part and the side walls of thelatter, forms an interior chamber adapted to receire the main frame 214and the carriage 35 of the machine. The keybozm'l extension 36 of themachine protrudes through, and forward of, the plate QT. that thekeyboard may be acccs. d le when the outer cover 16 is removed. Thisinterior chamber has the rear wall thereof lined with sound-deadeningmaterial 37 the side walls thereof with sound-deadening material 38; thebase thereoi with sounddeadening material 39; and the front thei-toi'with sound deadening material 10. which latter is suitably secured tothe plate 27. This interior chamber is also provided with a cover 41,hinged at elil to the raring side walls 2%, and adapted to be swun t atts normal, Figure :3, position, to the ition shown in Figure t, in whichlatter poution acces may he had to the machine, for c l ures and thelike.

For centering and holding, the machine to the casing base 30, the rearfeet 41-3 of the machine are moved into brackets t t and the front feet45 into (.isks 16. The front of the machine is then locked againstupward movement by a plate 47, secured to the upper edge of the plate27, and which crosses: over, and tits down upon, the front plate 48 o fthe machine, as shown in Figure 3. This plate 47 i provided with asound-deadening lining 19 and forms an upward continuation of the frontwall of the interior chamlf er to the lower front edge of the interiorcover 41 when the latter is in normal, Figure 2, posit ion.

In order that the plate 47 be readil removed for the insert ion of themachine. and thereafter locked in place upon the plate 52?. thefollowing means are provided. In the upper edge of the plate 27. one ateach side thereof, are two vertical slots 50. Fast to the plate 47, andadapted to register with the slots 50, are pins which project inwardfrom the plate 47 thron h the lining of the latter, and through slot thelining 40 of the plate 27, to a point beyond the interior face of thelatter lining. l s hen the pins 51 are registered with the slots 50, theplate -17 may therefore be lowered into Figure 3 position for engagementwith a shoulder 52 on the plate 27, and for engagement with the frontwall 48 of the machine. In this position, hooks 53, pivoted at to theplate 2?, are adapted to have their noses snapped over the pins 51, tolock the plate 47 down against upward displacement. As shown in Figure9, the hooks 53 are s read from the plate 527. by means of collars onthe pivot-pins 54. Each hook 53 has a finger 57 integral therewith. Asshown in Figure 2, the lower part of the hook 53 is offset forward at58, and then upward in the forn'i of a yoke 59. The yoke 59 looselyembraces a stop-pin 60. fast to the plate 2?: and the throw of the hook,in either direction, is determined by the eneasement of one or the otherof the arms of the yoke with the pin (10. The pin 0 also serves asanchorage for one end of a spring; 61, the other end of which is securedby a pin 62 to the hook. The tension of the spring is such as to urgethe hook in a direction to lock, and hold locked, the p ate *17, uponthe plate 27. The lining;' 40 on the 1 to 27 is suitably cut away orrecessed, to rev we the yoke 59 of the hook, and to allow for movementof the latter with the hook.

The cover is pivotally connected to the casing side walls 26 in thefollowing manner. Secured, by means of wood screws 63, to the walls 26are disks or plates 6'4,having bushings integral therewith and offsetinto countersinks in the walls 26. These bushings serve as journals forpivot-pins (S6. The pins 66 are held to the cover-wall 41 by U-shapedmembers or yokes 67, each of which has a flange 68 to receive screws 69,for holding the U-pieces to the cover. The pivot-pins 66 are heldagainst longitudinal movement in the U- pieces, and in the bushings 65,by set-screws 70 in the U-pieces. The pivot-pins (see Figure project atT1 beyond the ends of the U- pieces; and such projecting ends havegrooves 72. to receive the finger-nail, or other implement, for slidingthe pins in and out of the bushings 65 when the set-screws 70 areloosened; thus permittitng the cover 41 to be mounted in the casing, orto be removed, eX- peditiously, and at will. The cover, like the rest ofthe interior casing, is provided with a lining 7 3; and this lining isprovided with a facing-piece 74, of sheet-metal or other material, toprevent fouling of the paper, in the machine, on the lining 73 as thecarria e is moved in letter-feed and return directions. As indicated inFigure 2, the lining 73 is recessed to receive the U-pieces 67 andpivotpins; and, to permit of access to the pivotpins and to theset-screws, the facing-piece 74,

I i as shown in Figure 5, is cut away at 75.

As hereinbefore stated, the normal position of the cover 41 is thatshown in Figure 2. The lower edges of the side lining-members 76 of thecover are held by strips 77; and screws 7 8 pass through the cover andthrough the lining 76 and thread into the strips 77. Also held by thestrips 77 and screws 78 (see Figure 5) are side Cushions 79, by means ofwhich the cover, at the sides thereof, is sup ported on the upper edgesof the side liningmembers 38 of the casing-part 15. These cushionsconsist of lengths of rubber tubing 80. wrapped in strips 81, offlexible material, such as felt. the edges of which strips are broughttogether at 82 between the side walls 83 of the cover and the retainingstrips 77, heretofore mentioned. The screws 78 pass through the gatheredends of the felt 81.

In the front of the cover is a window, through which the writing on theplaten may be observed. A window-pane 84. of glass or other transparentmaterial, is set into a frame provided therefor in the cover. In thedrawings, the pane is shown as comprising super posed sheets of glass85, 86 (see Figure 7). At the sides of the window are metal plates 87,secured to the cover by screws 88, which plates, at the edges thereof,underlie the edges of the lower pane 86, and serve as shelves on whichthe window-panes are supported from the cover. At the front of thewindow, the forward edge of the pane is supported by a flange 89 on ametal strip 90, secured by screws 91 to the lower front edge of thecover. The strip 90 and screws 91 serve also to hold to the cover acushion 92 similar in all respects to the side cover-supporting cushions79, and which rests upon an offset 93 on the upper edge of the removablefront plate 47, when the cover is in normal position. At the rear of thewindow, a metal strip 94 serves as a supporting shelf for the rear edgeof the pane 85, and this strip 94 is held to the cover-plate 41 byscrews 95.

The cover is normally locked down in Figure 2 position. When, however,the cover is unlocked, it is adapted to be automatically thrown open,that is, to Figure 4 position, by a springdevice (not shown).

The cover is held against opening by a look (see Figures 3 and 8) at thefront wall of the interior casing. This lock consists of a hook 96,pivoted at 97 to the plate 27, and held suitably spaced therefrom by acollar 98 on the pivot-pin 97. The nose 99 of the hook is adapted to beengaged in a stirrup 100, depending from the cover-plate 41, at thelefthand side of the window, and having a flange 101 at its upper end toreceive a screw 102, by means of which the stirrup is held to the cover.The nose 99 of the hook is carried by a piece 103, adjustable up anddown, with respect to the hook-proper 96, for accurate determination ofthe correct locked position of the cover and casing-proper. To permit ofsuch adjustment, headed screws 104 on the hookproper pass through slots105 in the adjustable part 103. The locked position of the hook isdetermined by a stop-pin 106 on the plate 27. This pin also serves asanchorage for one end of a spring 107 (see Figure 3), the other end ofwhich spring is connected to a pin 108 on a finger 109 of thehook-proper. The spring 107 acts automatically to throw the hook tocover-locking position, and to hold the same in such position. Formoving the hook to unlock the cover, there is pivotally connectedthereto, at 110, a link 111, the other end of which link is pivotallyconnected at 112 to an arm 113, fast on a rock-shaft 114, journaled inthe front plate 27. The shaft 114 passes through the front plate, and,on the outside of the front plate, has fast thereto an arm 115, carryinga finger-piece 116. Depression of the finger-piece 116 causes the arm115 to be rocked in such manner as to draw on the link 111, and releasethe hook; whereupon the spring-device, heretofore mentioned, throws openthe cover.

Since the machine is to be operated in the sound-proof inner casing, andsince the side walls 26 of the casing-part 15 form also the side wallsof the interior sound-proof chamber, the length of the several parts ofthe casing must be such as to allow for full movelit) ment of thecarriage in letter-feed and return directions on the machine. Secured tothe carriage, however, are various operating levers and arms whichshould be accessible from the outside of the sound-proof chamber. Theselevers and arms comprise a line-space lever 117, for operatingline-space mechanism 117, a carriage-rack-releaso lever 118, fordisengaging a rack 118 from the escapementpinion 118, and acarriage-return arm 119. If they are to project to the outside of thesoundproof chamber, the latter must be slotted to permit them to traveltherealong with the carriage. Such a slot is shown at 120 in the coverat the rear of the window-pane. If this slot is open, however,undesirable noise will be emitted therethrough. Consequently, resilientcushions 121 are provided which come together to close the slot, exceptat the points where the levers and arms protrude therethrough. Thesecushions (see Figures 2 and 7) are a forward cushion 122 and a rearwardcushion 123. The cushions are identical in construction, consisting ofan inner flattened tube 124, of flexible material, embraced andsupported by a strip 125, of flexible material, such as felt, the endsof which are brought together and secured to the cover-plate. As to theforward cushion, the felt edges are brought between the rearwindowpane-supporting strip 94 and coverplate 41. The screws 95, whichhold the strip 94, pass through and hold the edges of the felt 125. Theedges of the felt 125 of the rear cushion are similarly brought togetherbetween the cover-plate 41 and a metal strip 126, which is held to thecover-plate by screws 12?, which pass through the gathered edges of thefelt and thread into the strip 126. Each cushion also comprises acoil-spring 128, wich extends longitudinally the full length thereof,and the ends of which are set on pins 129 in bracket-plates 130. Eachplate 130, at the forward end thereof, is provided with an car 131, bymeans of which it is secured to the window-retaining strip 94, and. atits rear end, with an car 132, by means of which it is secured to theretaining strip 126. The coils 128, as shown in Figure 2, art setagainst the flexible cushion-parts 124 in such position as to yieldinglyhold the latter together, to close the slot between the same. Inaddition to their and supports on the plates 130. the coils are held tothe cushion-parts 124: at intervals throughout their length byspring-clips 133 (see Figure 7 These clips are curved to embrace thecoils, and have flattened tongues 13%, adapted to be inserted betweenthe retaining strips 94 and 126, as the case may be, and the gatheredends of the cushion-holding felt between such strips and the cover-wall41. In forcing the clips into position, the felt is compressed, and,being thereafter under compression, exerts a frictional hold on theclips which prevents their accidental displacement. The clips may,therefore, be positioned and removed without manipulation of any specialattaching means therefor; and, being held, as above stated, may bepositioned wherever desired along the cushions, and in any desirednumber. Preferably the clips for holding the coil of the rear cushionare staggered with respect to the clips for holding the coil of thefront cushion. This is so, in order that two opposed andimmediately-registering clips, one bearing on each cushion, may notoffer too great a resistance to movement of the levers with the carriagealong the cushions. As has been stated, the clips themselves areflexible, and, if made sutiiciently flexible, might even be directlyopposed to each other on the two cushions.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

Having thus described the invention, we claim 1. A sound-deadeningcasing}; for a typewriting machine having a slot or joint therein and acushion for closing the slot or joint, including a strip of flexible.fabric attached to the casing at one side of the joint and adapted tohave its face bear upon the other side of the joint, a coil spring setagainst the rear of the strip of fabric longitudinally thereof, andspring clips for holding the coil spring to the fabric strip. 7'

2. A sound-deadening casing for a typevvriting machine having a slot oroint there in and a cushion for closing the slot or joint, including astrip of flexible fabric attached to the casing at one side of the jointand adapted to have its face bear upon the other side of the joint, acoil spring set against the rear of the strip of fabric longitudinallythereof, and pins on the casing at the ends of the slot for receivingand siipporting the open ends of the coil spring.

3. A sound-deadening casing for a typevritiug machine having a slot orjoint therein and a cushion for closing the slot or joint, including astrip of flexible fabric attached to the casing at one side of the jointand adapted to have its face bear upon the other side of the joint, acoil spring set against the rear of the strip of fabric longitudinallythereof, and means for supporting the coil spring intermediate its ends.7

4. A sound-deadening casing for a typewriting machine having a slotlongitudinal thereof through which may project and along which maytravel an ope 'ating arm or lever on the carriage of the machine, andcushions extending longitudinally of the slot, one on each edge thereofand adapted to bear against each other to close the slot, the cushionscomprising strips of flexible fabric attached to the casing on theopposite sides of the slot, and spring clips in engagement with the rearfaces 9f the cushions at intervals therealong to urge the same together,said clips being staggered With respect to each other.

5. A sound-deadening casing for a typewriting machine having a slotlongitudinal thereof through which may project and along which maytravel an operating arm or lever on the carriage of the machine, andcushions extending longitudinally of the slot, one on each edge thereofand adapted to bear against each other to close the slot, the cushionscomprising strips of flexible fabric attached to the casing on theopposite sides of the slot, and coil springs in engagement with the rearfaces of the cushions to urge the same together.

6. A sound-deadening casing for a type- Writing machine having a slotlongitudinal thereof through Which may project and along which maytravel an operating arm or lever on the carriage of the machine, andcushions extending longitudinally of the slot, one on each edge thereofand adapted to bear against each other to close the slot, the cushionscomprising strips of flexible fabric attached to the casing on theopposite sides of the slot, coil springs in engagement With the rearfaces of the cushions to urge the same together, and spring clips atintervals along the cushions in contact with the coil springs to holdthe coil springs to the flexible strips, said cushions contactinginteriorly of the casing within the outer surface thereof.

MICHAEL J. CORCORAN, Admaistmtor 0/ the Estate of Cornelius B.

Carcoran, Deceased.

ALFRED G. F. KUROWSKI.

